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Bug 1428487 - (CVE-2017-6346) CVE-2017-6346 kernel: net: Race condition in net/packet/af_packet.c
CVE-2017-6346 kernel: net: Race condition in net/packet/af_packet.c
Status: CLOSED NOTABUG
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
impact=moderate,public=20170214,repor...
: Security
Depends On: 1434247 1434248 1434249 1434245 1434246
Blocks: 1428495
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Reported: 2017-03-02 11:48 EST by Andrej Nemec
Modified: 2017-04-12 12:15 EDT (History)
36 users (show)

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Doc Text:
Race condition in net/packet/af_packet.c in the Linux kernel allows local users to cause a denial of service (use-after-free) or possibly have unspecified other impact via a multithreaded application that makes PACKET_FANOUT setsockopt system calls.
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Last Closed: 2017-04-12 12:15:11 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Andrej Nemec 2017-03-02 11:48:06 EST 
Race condition in net/packet/af_packet.c in the Linux kerne allows local users to cause a denial of service (use-after-free) or possibly have unspecified other impact via a multithreaded application that makes PACKET_FANOUT setsockopt system calls. 

Upstream patch:

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d199fab63c11998a602205f7ee7ff7c05c97164b

References:

http://seclists.org/oss-sec/2017/q1/526
Comment 1 Wade Mealing 2017-03-20 23:07:41 EDT 
Statement:

This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5 and 6 as the code which can trigger the flaw is not present in the products listed.

This issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 7 and MRG-2. Future Linux kernel updates for the respective releases may address this issue.
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